CAJ | 학술논문

采用模具,得到了膨润土立方和扇形压实块体,进而对其压实成型性和抗压性进行研究分析,建立了曲线拟合方程.结果显示,压实干密度、含水率等因素对压实成型性和抗压性影响较大,膨润土结合水与颗粒表面的相互作用起到关键作用.压实块含水率达到14%～15%范围内时出现最低压实压力,并且表现出较好的成型性;含水率在13%～15%之间时其无侧限抗压强度达到最大值,而后迅速下降,而且破坏方式也与舍水率有关;压实块的压实压力随着压实干密度增加而呈现指数增加;压实干密度相近情况下.扇形压实块体的无侧限抗压强度稍大.
채용모구,득도료팽윤토립방화선형압실괴체,진이대기압실성형성화항압성진행연구분석,건립료곡선의합방정.결과현시,압실간밀도、함수솔등인소대압실성형성화항압성영향교대,팽윤토결합수여과립표면적상호작용기도관건작용.압실괴함수솔체도14%～15%범위내시출현최저압실압력,병차표현출교호적성형성;함수솔재13%～15%지간시기무측한항압강도체도최대치,이후신속하강,이차파배방식야여사수솔유관;압실괴적압실압력수착압실간밀도증가이정현지수증가;압실간밀도상근정황하.선형압실괴체적무측한항압강도초대.
The moulds are used for compacting bentonite into cubic and fan-shaped blocks, the compactibility and the compressive behaviors are analysed, the curves fitting equations are established. The results show that the compactibility and the compressive behaviors are affected greatly by compacting dry density, moisture content and other factors, the interactions between bound water of bentonite and its particle surface play a key role. A minimum compacting pressure will appear when the water content of compacted bentonite block reaches 14%～15%, and also exhibits a hatter compaetibility; The unconfined compressive strength achieves maximum when the bentonite blocks with 13%～15% water content and then decreases rapidly, furtharmore,the failure mode relates to the water content; The compacting pressure of the compacted bentonite blocks increases exponentially with the compacting dry density;it is found that the unconfined compressive strength of fan-shaped block with similar compacting dry density is slightly larger.